What's some place that makes you want to quit?

For me it's Distortion World, super boring place, I unironically had my game in a hiatus for 2 years for this very place (not in the first time I played, just in an android run)

Specially those annoying platforms that you have to literally wait in order to see if it does or doesn't do something, and every jump or move you make has a 2s animation. This problem is also present in other places of Sinnoh (specially Gyms).